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As the input varies from 1 to 5 volts the current through the solenoid varies from

As the input varies from 1 to 5 volts the current through the solenoid varies from

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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As the input varies from 1 to 5 volts the current through the solenoid varies from

  a.

12.67-55.33 mA
  b.

2.67-13.33 mA
  c.

6.67 -33.33 mA
  d.

10.67-53.33 mA
  e.

4.0-20.0 mA



The image depicts an electronic circuit diagram featuring an operational amplifier (op-amp) configuration with a solenoid as the load. ### Components and Connections: - **V1, V2, V3 (12V each):** - These are three separate DC voltage sources, each providing 12 volts. - **1kΩ Resistor:** - Connected to the non-inverting input (+) of the op-amp (pin 3). - **Operational Amplifier (U1 - 741):** - A 741 op-amp is used in this circuit. It has standard pins: - Pin 6: Output - Pin 2: Inverting input (-) - Pin 3: Non-inverting input (+) - Pin 4: Negative power supply - Pin 7: Positive power supply - The non-inverting input (pin 3) is connected to the 1kΩ resistor. - The inverting input (pin 2) receives feedback from the op-amp output (pin 6). - **250Ω Resistor:** - Connected between the op-amp's output (pin 6) and its inverting input (pin 2) for negative feedback. - **Solenoid (50 ohms):** - Placed in the path from the op-amp output to the ground through V3. - Represents a load controlled by the op-amp's output. ### Explanation: - The circuit uses a 741 op-amp to drive a solenoid with a 50-ohm resistance. - The op-amp is configured in a feedback loop, using a 250Ω resistor for stabilizing the gain. - The feedback connection between the op-amp output and inverting input controls the output voltage, allowing the solenoid to be actuated. - The 12V power supplies ensure the necessary voltage levels for the op-amp and the solenoid operation.
Transcribed Image Text:The image depicts an electronic circuit diagram featuring an operational amplifier (op-amp) configuration with a solenoid as the load. ### Components and Connections: - **V1, V2, V3 (12V each):** - These are three separate DC voltage sources, each providing 12 volts. - **1kΩ Resistor:** - Connected to the non-inverting input (+) of the op-amp (pin 3). - **Operational Amplifier (U1 - 741):** - A 741 op-amp is used in this circuit. It has standard pins: - Pin 6: Output - Pin 2: Inverting input (-) - Pin 3: Non-inverting input (+) - Pin 4: Negative power supply - Pin 7: Positive power supply - The non-inverting input (pin 3) is connected to the 1kΩ resistor. - The inverting input (pin 2) receives feedback from the op-amp output (pin 6). - **250Ω Resistor:** - Connected between the op-amp's output (pin 6) and its inverting input (pin 2) for negative feedback. - **Solenoid (50 ohms):** - Placed in the path from the op-amp output to the ground through V3. - Represents a load controlled by the op-amp's output. ### Explanation: - The circuit uses a 741 op-amp to drive a solenoid with a 50-ohm resistance. - The op-amp is configured in a feedback loop, using a 250Ω resistor for stabilizing the gain. - The feedback connection between the op-amp output and inverting input controls the output voltage, allowing the solenoid to be actuated. - The 12V power supplies ensure the necessary voltage levels for the op-amp and the solenoid operation.
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